User`s guide

Using the System Utilities 4
Model N6705A User’s Guide 91
Configuring the Digital Port
The following table describes the possible pin configurations for the
digital port functions. For a complete description of the electrical
characteristics of the digital port, refer to Appendix A.
Pin Function Available configurable pins
Digital I/O and Digital In
Pins 1 through 7
External Trigger In/Out
Pins 1 through 7
Fault Out
Pins 1 and 2
Inhibit In
Pin 3
Output Couple
Pins 4 through 7
Common (⊥)
Pin 8
To configure the bi-directional digital I/O, press the Menu key, scroll
down and select the Utilities item, then select Digital I/O.
Select the pin you wish to configure from the Pin dropdown list.
Select a function for the pin the from the Function dropdown list.
Select from Digital In, Digital I/O, Trigger Out Trigger In Refer to the
following descriptions of each of the digital I/O functions.
Configure the polarity for each pin by selecting the Polarity
dropdown menu. When positive polarity is selected, a logical true
signal is a voltage high at the pin. When negative polarity is selected,
a logical true signal is a voltage low at the pin.
The Data fields only apply to the Digital I/O and Digital In functions.
Digital I/O
Each of the seven pins can be configured as general-purpose bi-
directional digital inputs and outputs. The ground reference for the
pins is Signal Common on pin 8. Bit assignments are as follows:
Pin 7 6 5 4 3 2 1
Bit 6 5 4 3 2 1 0
Enter the value of the digital word into the Out field of the Digital I/O
Properties window. The In field reflects the condition of the external
signal that is applied to the pin.